Recent Process and Development of Metal Aminoborane

Abstract

This Review focuses on the development of metal aminoboranes; it discusses their synthesis, structure, chemical characterization, and applications. The lightweight nature of the molecules, the simplified procedures for the synthesis of the target compounds, the reversibility of hydrogen storage and dehydrogenation, and in-depth research on the mechanism of the thermal decomposition are also discussed. A major challenge that still remains is how to combine the advantages of the compounds to produce a material that is not only able to release and absorb hydrogen under atmospheric conditions, but is also lightweight with a stable molecular structure. Finally, some future trends and perspectives in these research areas will be outlined.

Electronic structures and dehydrogenation properties of bimetallic amidoboranes

“…This suggests the stability of SLAB is the weakest in the four compounds. It is indeed observed in the experiment [25,27] that SLAB is easier to decompose at lower temperature (58 C) than that of DSMAB (65 C).…”

“…These MM 0 ABs improve the purity of hydrogen in the product and decrease the initial dehydrogenation temperature compared to monometallic amidoborane. For example, the decomposition temperatures are 92, 79, 80 and 90 C for Li(NH 2 BH 3 ), Na(NH 2 BH 3 ), K(NH 2 BH 3 ) and Ca(NH 2 BH 3 ) 2 , respectively; while for the compounds of SMAB (3AB/MgNaH 3 [23]), DSMAB and SLAB, they are 50 C (around 50 C [23]), 65 and 58 C, respectively [25,27].…”

Ammonia borane: A high capacity chemical hydrogen storage material

“…MAB) [108,109] , 可以有效抑制释氢过程中有毒气体硼 吖嗪 NaNH 2 BH 3 由 Schlesinger 等人 [126] 于 1938 年用硼烷醚 合物((CH 3 ) 2 OBH 3 )和金属钠在液氨中首次反应得到.…”

Fluorine-substituted Mg(BH4)2·2NH3with improved dehydrogenation properties for hydrogen storage

“…These hydrogen-storage systems include ammonia borane (AB), 14,15 metal amidoboranes (MABs), 16,17 and amidehydride. These hydrogen-storage systems include ammonia borane (AB), 14,15 metal amidoboranes (MABs), 16,17 and amidehydride.…”

“…These hydrogen-storage systems include ammonia borane (AB), 14,15 metal amidoboranes (MABs), 16,17 and amidehydride. [23][24][25][26][27] Magnesium borohydride diammoniate (Mg(BH 4 ) 2 $2NH 3 ), which has a gravimetric hydrogen capacity as high as 16.03 wt% and a low dehydrogenation temperature of approximately 150 C, has considerable potential as a practical hydrogen storage material for PEMFCs. [23][24][25][26][27] Magnesium borohydride diammoniate (Mg(BH 4 ) 2 $2NH 3 ), which has a gravimetric hydrogen capacity as high as 16.03 wt% and a low dehydrogenation temperature of approximately 150 C, has considerable potential as a practical hydrogen storage material for PEMFCs.…”